Recent content by caieng

umm, good. well, I am of the opinion, maybe not widely held, maybe at variance with the National Institutes of Health, or the Center for Disease Control, but, in my opinion, adding chlorine to water stored in a concrete tank is a mistake. Your concern is understandable, you wish to control...

I like your thinking, I have the same idea: here are some concerns I have recognized, in my own design. a. need to filter the water, prior to storage, to eliminate debris--then need to deionize the water, to prevent breakdown of the concrete. One must also distill the water, after storage...

Good. Excellent. I had the same idea. Here are some additional thoughts, on the rationale, and a couple of additional comments on problems which I have encountered, and not yet completely solved: a. WATER: I am not writing here about using water, as some have suggested, above, as the...

Yes, it will. The anticipated temperature range is -20 C to + 40 C. Thank you Bob, for your very helpful calculations. The moving object will most certainly be constructed from non-magnetic materials, however, it will still weigh about 40kg. I also have not yet figured out how to...

Thank you Bob. I will investigate hydraulic mechanisms, further, along with electromagnetic actuators.

I seek to construct an apparatus capable of moving a steel plate against gravity in 200 milliseconds. The plate is roughly the same size and shape as the hatch on a submarine: mass = 40 kg; dimension: 0.3 meter diameter--> = radius in calculations below; angle of rotation: 90...